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EP0313963B1 - N-phenyltetrahydrophthalimide derivatives - Google Patents

N-phenyltetrahydrophthalimide derivatives Download PDF

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Publication number
EP0313963B1
EP0313963B1 EP88117315A EP88117315A EP0313963B1 EP 0313963 B1 EP0313963 B1 EP 0313963B1 EP 88117315 A EP88117315 A EP 88117315A EP 88117315 A EP88117315 A EP 88117315A EP 0313963 B1 EP0313963 B1 EP 0313963B1
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formula
compound
compounds
chlorine
hydrogen
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German (de)
French (fr)
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EP0313963A1 (en
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Lothar Dr. Rueb
Karl Dr. Eicken
Bernd Dr. Zeeh
Norbert Dr. Meyer
Bruno Dr. Wuerzer
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BASF SE
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/08—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with oxygen as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/10—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with sulfur as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links

Definitions

  • the invention also relates to a process for the preparation of the compounds I and their use as herbicidal compositions.
  • N-aryl-substituted tetrahydrophthalimides with herbicidal activity are known from the literature. For example, described in DE-A 3 013 162 tetrahydrophthalimides, the effectiveness of which is unsatisfactory at low application rates.
  • the invention was therefore based on the object of synthesizing compounds which, at lower application rates, have a higher selectivity towards crop plants.
  • N-tetrahydrophthalimide compounds I have been found which have an advantageous herbicidal action, particularly in the post-emergence process, and are selective towards a number of crops.
  • the compounds I are also suitable as drying agents (dessication agents) for killing green shoots to make harvesting easier.
  • N-phenyltetrahydrophthalimide compounds of the formula I can be obtained, for example, by appropriately substituting a correspondingly substituted N- (3-hydroxyphenyl) -3.4.5.6-tetrahydrophthalimide II at temperatures up to 200 ° C., preferably at 25 to 150 ° C. Reacting solvent in the presence of a base with a suitable compound of formula III.
  • X in formula III means halogen such as Chlorine, bromine or iodine or sulfonyloxy such as e.g. Methylsulfonyloxy, trifluoromethylsulfonyloxy, phenylsulfonyloxy or tolylsulfonyloxy, preferably bromine or tolylsulfonyloxy.
  • N-phenyltetrahydrophthalimide compounds of the formula I are also obtained, for example, by reacting 3.4.5.6.-tetrahydrophthalic anhydride with a corresponding aniline IV, for example in a solvent at temperatures up to 200 ° C., preferably 40 to 150 ° C.
  • Suitable solvents are e.g. lower alkanoic acids such as glacial acetic acid or propionic acid or aprotic solvents such as toluene or xylene in the presence of acidic catalysts such as e.g. aromatic. Sulfonic acids.
  • the aniline derivatives VI can be obtained, for example, by hydrogenating an appropriately substituted nitro compound V in the presence of Raney nickel or a noble metal catalyst such as platinum or palladium, or by reducing agents such as iron or a tin (II) salt.
  • the nitro compounds V are obtained by reacting the corresponding phenols IV with the compounds of the formula III at up to 200 ° C., preferably at 25 to 150 ° C., in an aprotic polar solvent (e.g. acetone, acetonitrile, dimethylformamide) in the presence of a base (e.g. potassium carbonate, sodium hydroxide, sodium hydride) accessible.
  • an aprotic polar solvent e.g. acetone, acetonitrile, dimethylformamide
  • a base e.g. potassium carbonate, sodium hydroxide, sodium hydride
  • R1 is preferably hydrogen or fluorine and R2 is preferably chlorine.
  • alkyl includes branched and straight-chain residues, namely methyl, ethyl, n-propyl, isopropyl.
  • the 5-6-membered heterocycles of the formula I are hydrogenated or partially hydrogenated furan, thiophene, pyran and thiopyran derivatives, preferably tetrahydrofuran, tetrahydrothiophene, tetrahydropyran, dihydropyran, tetrahydrothiopyran or dihydrothiopyran. If they are substituted several times, all possible steric arrangements can occur. These can have biologically different effects.
  • R1 is hydrogen or fluorine
  • R2 is chlorine
  • R3 is hydrogen
  • R4 is 2- or 3-tetrahydrofuranyl, 2- or 3-tetrahydrothienyl, 2-, 3- or 4-tetrahydropyranyl, 2-, 3- or 4-tetrahydrothiopyranyl, 5,6-dihydro-2H-pyranyl and 5,6-dihydro-2H-thiopyranyl.
  • the herbicidal compositions or the underlying active ingredients (I) can be applied pre- or post-emergence. If the active ingredients are less compatible with certain crop plants, application techniques can be used in which the herbicidal compositions are sprayed with the aid of sprayers in such a way that the leaves of the sensitive crop plants are not struck wherever possible, while the active ingredients are applied to the leaves of undesirable plants growing below them or the uncovered floor area (post-directed, lay-by).
  • the application rates of active ingredient are 0.005 to 3.0, preferably 0.01 to 0.5 kg / ha, depending on the control target, season, target plants and growth stages.
  • plants are either sown directly or grown in the same containers, or they are first grown separately as seedlings and transplanted into the test containers a few days before the treatment.
  • test plants are then treated at a height of 3 to 15 cm with the active ingredients suspended or emulsified in water as a distribution medium and sprayed through finely distributing nozzles.
  • the application rates for post-emergence treatment vary; they amount to 0.015 to 0.125 kg / ha a.S.
  • test vessels are set up in the greenhouse, warmer areas (20 to 35 ° C.) being preferred for heat-loving species and 10 to 20 ° C. being preferred for those with moderate climates.
  • the trial period spans 2 to 4 weeks. During this time, the plants are cared for and their reaction to the individual treatments is evaluated.
  • Evaluation is based on a scale from 0 to 100. 100 means no emergence of the plants or complete destruction of at least the aerial parts and 0 means no damage or normal growth.
  • the plants used in the greenhouse experiments belong to the following types: abbreviation Latin name German name English name ABUTH Abutilon theophrasti Chinese hemp velvet leaf AMARE Amaranthus spp. Foxtail species pigweed CHEAL Chenopodium album White goose foot lambsquarters CHYCO Chrysanthemum coronar. Weepers marigold GALAP Galium aparine Burdock herb catchweed bedstraw IPOSS Ipomoea spp.
  • the compounds 29, 9, 3 and 10 show good herbicidal activity against broad-leaved undesirable plants (Table 2) even when the application rate is low.
  • Unwanted broad-leaved plants are reliably detected by the new active ingredients 21, 22 and 4 with 0.03 and 0.06 kg a.S./ha in the post-emergence process.
  • the compounds according to the invention or compositions containing them can also be used in a further number of crop plants for eliminating undesired plants.
  • the following crops are considered, for example:
  • the active compounds of the formula I can be mixed both among themselves and with numerous representatives of other herbicidal or growth-regulating active compound groups and applied together.

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  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Plant Pathology (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Indole Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

N-Phenyltetrahydrophthalimide compounds of the formula I <IMAGE> I where R1 is hydrogen, fluorine or chlorine, R2 is chlorine or bromine, R3 is hydrogen or C1-C3-alkyl, and R4 is a 5- or 6-membered, saturated or unsaturated heterocyclic compound containing an oxygen or a sulfur atom and which is unsubstituted or substituted by a maximum of three C1-C3-alkyl groups, methods of manufacturing these compounds, and their use as herbicides.

Description

Die Erfindung betrifft N-Phenyltetrahydrophthalimidverbindungen der Formel I,

Figure imgb0001

in der die Substituenten folgende Bedeutung haben:

R¹
Wasserstoff, Fluor oder Chlor
R²
Chlor oder Brom
R³
Wasserstoff oder C₁-C₃-Alkyl
R⁴
ein 5-6-gliedriger gesättigter oder ungesättigter Heterocyclus, enthaltend ein Sauerstoff- oder Schwefel-Atom im Ring, der durch bis zu drei C₁-C₃-Alkylgruppen substituiert sein kann.
The invention relates to N-phenyltetrahydrophthalimide compounds of the formula I,
Figure imgb0001
in which the substituents have the following meaning:
R¹
Hydrogen, fluorine or chlorine
R²
Chlorine or bromine
R³
Hydrogen or C₁-C₃ alkyl
R⁴
a 5-6-membered saturated or unsaturated heterocycle containing an oxygen or sulfur atom in the ring, which can be substituted by up to three C₁-C₃ alkyl groups.

Außerdem betrifft die Erfindung ein Verfahren zur Herstellung der Verbindungen I sowie ihre Anwendung als herbizide Mittel.The invention also relates to a process for the preparation of the compounds I and their use as herbicidal compositions.

Aus der Literatur sind N-arylsubstituierte Tetrahydrophthalimide mit Herbizidwirkung bekannt. So werden z.B. in der DE-A 3 013 162 Tetrahydrophthalimide beschrieben, deren Wirksamkeit bei niedrigen Aufwandsmengen unbefriedigend ist.N-aryl-substituted tetrahydrophthalimides with herbicidal activity are known from the literature. For example, described in DE-A 3 013 162 tetrahydrophthalimides, the effectiveness of which is unsatisfactory at low application rates.

Der Erfindung lag daher die Aufgabe zugrunde, Verbindungen zu synthetisieren, die bei geringeren Aufwandmengen eine höhere Selektivität gegenüber Kulturpflanzen besitzen.The invention was therefore based on the object of synthesizing compounds which, at lower application rates, have a higher selectivity towards crop plants.

Entsprechend dieser Aufgabe wurden die N-Tetrahydrophthalimidverbindungen I gefunden, die eine vorteilhafte herbizide Wirkung, besonders im Nachauflaufverfahren, haben und gegenüber einer Reihe von Kulturen selektiv sind.In accordance with this task, the N-tetrahydrophthalimide compounds I have been found which have an advantageous herbicidal action, particularly in the post-emergence process, and are selective towards a number of crops.

In speziellen Fällen und bei einigen Kulturpflanzen eignen sich die Verbindungen I auch als Abtrocknungsmittel (Dessicationsmittel) zur Abtötung von grünen Sproßteilen zur Ernteerleichterung.In special cases and in some crops, the compounds I are also suitable as drying agents (dessication agents) for killing green shoots to make harvesting easier.

N-Phenyltetrahydrophthalimidverbindungen der Formel I können beispielsweise dadurch erhalten werden, daß man ein entsprechend substituiertes N-(3-Hydroxyphenyl)-3.4.5.6-tetrahydrophthalimid II bei Temperaturen bis zu 200°C, vorzugsweise bei 25 bis 150°C, in einem geeigneten Lösungsmittel in Gegenwart einer Base mit einer geeigneten Verbindung der Formel III umsetzt.

Figure imgb0002
N-phenyltetrahydrophthalimide compounds of the formula I can be obtained, for example, by appropriately substituting a correspondingly substituted N- (3-hydroxyphenyl) -3.4.5.6-tetrahydrophthalimide II at temperatures up to 200 ° C., preferably at 25 to 150 ° C. Reacting solvent in the presence of a base with a suitable compound of formula III.
Figure imgb0002

X in der Formel III bedeutet Halogen wie z.B. Chlor, Brom oder Jod oder Sulfonyloxy wie z.B. Methylsulfonyloxy, Trifluormethylsulfonyloxy, Phenylsulfonyloxy oder Tolylsulfonyloxy, bevorzugt Brom oder Tolylsulfonyloxy.X in formula III means halogen such as Chlorine, bromine or iodine or sulfonyloxy such as e.g. Methylsulfonyloxy, trifluoromethylsulfonyloxy, phenylsulfonyloxy or tolylsulfonyloxy, preferably bromine or tolylsulfonyloxy.

Man erhält die N-Phenyltetrahydrophthalimidverbindungen der Formel I beispielsweise auch, indem man 3.4.5.6.-Tetrahydrophthalsäureanhydrid mit einem entsprechenden Anilin IV, z.B. in einem Lösungsmittel bei Temperaturen bis 200°C, vorzugsweise 40 bis 150°C umsetzt.

Figure imgb0003
The N-phenyltetrahydrophthalimide compounds of the formula I are also obtained, for example, by reacting 3.4.5.6.-tetrahydrophthalic anhydride with a corresponding aniline IV, for example in a solvent at temperatures up to 200 ° C., preferably 40 to 150 ° C.
Figure imgb0003

Als Lösungsmittel eignen sich z.B. niedere Alkansäuren wie Eisessig oder Propionsäure oder aprotische Lösungsmittel wie Toluol oder Xylol in Gegenwart von sauren Katalysatoren wie z.B. aromat. Sulfonsäuren.Suitable solvents are e.g. lower alkanoic acids such as glacial acetic acid or propionic acid or aprotic solvents such as toluene or xylene in the presence of acidic catalysts such as e.g. aromatic. Sulfonic acids.

Die Anilinderivate VI können z.B. dadurch erhalten werden, daß man eine entsprechend substituierte Nitroverbindung V in Gegenwart von Raney-Nickel oder eines Edelmetallkatalysators wie Platin oder Palladium hydriert oder durch Reduktionsmittel wie Eisen oder ein Zinn(II)-Salz reduziert.

Figure imgb0004
The aniline derivatives VI can be obtained, for example, by hydrogenating an appropriately substituted nitro compound V in the presence of Raney nickel or a noble metal catalyst such as platinum or palladium, or by reducing agents such as iron or a tin (II) salt.
Figure imgb0004

Die Nitroverbindungen V sind durch Umsetzung der entsprechenden Phenole IV mit den Verbindungen der Formel III bei bis zu 200°C, vorzugsweise bei 25 bis 150°C, in einem aprotisch polaren Lösungsmittel (z.B. Aceton, Acetonitril, Dimethylformamid), in Gegenwart einer Base (z.B. Kaliumcarbonat, Natriumhydroxid, Natriumhydrid) zugänglich.

Figure imgb0005
The nitro compounds V are obtained by reacting the corresponding phenols IV with the compounds of the formula III at up to 200 ° C., preferably at 25 to 150 ° C., in an aprotic polar solvent (e.g. acetone, acetonitrile, dimethylformamide) in the presence of a base ( e.g. potassium carbonate, sodium hydroxide, sodium hydride) accessible.
Figure imgb0005

R¹ steht bevorzugt für Wasserstoff oder Fluor und R² bevorzugt für Chlor.R¹ is preferably hydrogen or fluorine and R² is preferably chlorine.

Die Bezeichnung Alkyl umfaßt verzweigte und geradkettige Reste, nämlich Methyl, Ethyl, n-Propyl, Isopropyl.The term alkyl includes branched and straight-chain residues, namely methyl, ethyl, n-propyl, isopropyl.

Die 5-6-gliedrigen Heterocyclen der Formel I sind hydrierte oder teilhydrierte Furan-, Thiophen-, Pyran- und Thiopyran-Abkömmlinge, bevorzugt Tetrahydrofuran, Tetrahydrothiophen, Tetrahydropyran, Dihydropyran, Tetrahydrothiopyran oder Dihydrothiopyran. Falls sie mehrfach substituiert sind, können alle möglichen sterischen Anordnungen vorkommen. Diese können biologisch unterschiedliche Wirkungen haben.The 5-6-membered heterocycles of the formula I are hydrogenated or partially hydrogenated furan, thiophene, pyran and thiopyran derivatives, preferably tetrahydrofuran, tetrahydrothiophene, tetrahydropyran, dihydropyran, tetrahydrothiopyran or dihydrothiopyran. If they are substituted several times, all possible steric arrangements can occur. These can have biologically different effects.

Unter den Verbindungen I sind diejenigen bevorzugt, in denen R¹ Wasserstoff oder Fluor, R² Chlor, R³ Wasserstoff und R⁴ ein 2- oder 3-Tetrahydrofuranyl, 2- oder 3-Tetrahydrothienyl, 2-, 3- oder 4-Tetrahydropyranyl, 2-, 3- oder 4-Tetrahydrothiopyranyl, 5,6-Dihydro-2H-pyranyl und 5,6-Dihydro-2H-thiopyranyl bedeutet.Preferred among the compounds I are those in which R¹ is hydrogen or fluorine, R² is chlorine, R³ is hydrogen and R⁴ is 2- or 3-tetrahydrofuranyl, 2- or 3-tetrahydrothienyl, 2-, 3- or 4-tetrahydropyranyl, 2-, 3- or 4-tetrahydrothiopyranyl, 5,6-dihydro-2H-pyranyl and 5,6-dihydro-2H-thiopyranyl.

Die in den nachstehenden Beispielen wiedergegebenen Arbeitsempfehlungen wurden unter entsprechender Abwandlung der Ausgangsverbindungen zur Gewinnung weiterer Verbindungen der allgemeinen Formel I benutzt. Die Verbindungen sind mit physikalischen Daten in der folgenden Tabelle aufgeführt. Verbindungen ohne solche Angaben lassen sich aus entsprechenden Stoffen in analoger Weise erhalten. Sie lassen aufgrund ihrer nahen strukturellen Beziehung zu den hergestellten und untersuchten Verbindungen eine gleichartige Wirkung erwarten.The working recommendations given in the examples below were used with appropriate modification of the starting compounds to obtain further compounds of the general formula I. The connections are listed with physical data in the following table. Compounds without such information can be obtained in an analogous manner from corresponding substances. Due to their close structural relationship to the compounds produced and investigated, they can be expected to have a similar effect.

Beispiel 1 (Verfahren A)Example 1 (Method A)

Figure imgb0006
Figure imgb0006

13,9 g N-(4-Chlor-3-hydroxyphenyl)-3.4.5.6-tetrahydrophthalimid, 8,2 g 3-Chlormethyl-5.6-dihydro-2H-thiopyran und 8,3 g Kaliumcarbonat wurden in 150 ml Acetonitril 5 Stunden unter Rückfluß erhitzt. Nach dem Abkühlen wurde abfiltriert, das Filtrat eingeengt und in 200 ml Methylenchlorid aufgenommen, 2 mal mit 10 %iger Natronlauge, 3 mal mit Wasser gewaschen, getrocknet und eingeengt. Man erhielt 15,0 g N-[4-Chlor-3-(5,6-dihydro-2H-thiopyranyl-3-methyloxy)-phenyl]-3.4.5.6-tetrahydrophthalimid (Fp. 116-119°C). (Tab. 1, Nr. 9)13.9 g of N- (4-chloro-3-hydroxyphenyl) -3.4.5.6-tetrahydrophthalimide, 8.2 g of 3-chloromethyl-5.6-dihydro-2H-thiopyran and 8.3 g of potassium carbonate were added in 150 ml of acetonitrile for 5 hours heated under reflux. After cooling, the mixture was filtered off, the filtrate was concentrated and taken up in 200 ml of methylene chloride, washed twice with 10% sodium hydroxide solution, three times with water, dried and concentrated. 15.0 g of N- [4-chloro-3- (5,6-dihydro-2H-thiopyranyl-3-methyloxy) phenyl] -3.4.5.6-tetrahydrophthalimide (mp. 116-119 ° C.) were obtained. (Tab. 1, No. 9)

Beispiel 2 (Verfahren B)Example 2 (Method B)

Figure imgb0007
Figure imgb0007

  • a) 9,6 g 2-Chlor-4-fluor-5-nitrophenol, 8,2 g 3-Chlormethyl-5.6-dihydro-2H-thiopyran und 3,8 g Kaliumcarbonat wurden in 150 ml Acetonitril 5 Stunden unter Rückfluß erhitzt. Nach dem Abkühlen und Abfiltrieren wurde das Filtrat eingeengt und in 200 ml Methylenchlorid aufgenommen. Die organische Phase wurde dreimal mit je 50 ml Wasser gewaschen, getrocknet, eingeengt und mit Petrolether verrührt. Man erhielt 12,5 g 2-Chlor-4-fluor-5-nitro-(5,6-dihydro-2H-thiopyranyl-3-methyloxy)benzol (Fp. 91 - 94°C).a) 9.6 g of 2-chloro-4-fluoro-5-nitrophenol, 8.2 g of 3-chloromethyl-5.6-dihydro-2H-thiopyran and 3.8 g of potassium carbonate were heated under reflux in 150 ml of acetonitrile for 5 hours. After cooling and filtering off, the filtrate was concentrated and taken up in 200 ml of methylene chloride. The organic phase was washed three times with 50 ml of water, dried, concentrated and stirred with petroleum ether. 12.5 g of 2-chloro-4-fluoro-5-nitro- (5,6-dihydro-2H-thiopyranyl-3-methyloxy) benzene (mp. 91-94 ° C.) were obtained.
  • b) Zu einer Mischung von 6,7 g Eisenpulver in 50 ml Methanol und 7,5 ml Eisessig gab man bei Rückfluß portionsweise 12,2 g der obigen Nitroverbindung und erhitzte 2 Stunden am Rückfluß. Nach dem Abkühlen wurden 250 ml Wasser zugegeben und abgesaugt. Das Filtrat wurde 3 mal wird je 100 ml Essigester extrahiert, getrocknet und im Vakuum das Lösungsmittel verdampft. Nach Reinigung durch Chromatographie erhielt man 5,5 g 4-Chlor-2-fluor-5-(5,6-dihydro-2H-thiopyranyl-3-methyloxy)-anilin (Fp. 73 - 74°C).b) To a mixture of 6.7 g of iron powder in 50 ml of methanol and 7.5 ml of glacial acetic acid, 12.2 g of the above nitro compound were added in portions at reflux and the mixture was heated under reflux for 2 hours. After cooling, 250 ml of water were added and suction filtered. The filtrate was extracted 3 times, 100 ml of ethyl acetate, dried and the solvent evaporated in vacuo. After purification by chromatography, 5.5 g of 4-chloro-2-fluoro-5- (5,6-dihydro-2H-thiopyranyl-3-methyloxy) aniline (mp. 73-74 ° C.) were obtained.
  • c) 5,5 g des obigen Anilins und 3,0 g Cyclohexen-1,2-dicarbonsäureanhydrid wurden in 100 ml Eisessig 5 Stunden unter Rückfluß erhitzt. Nach dem Abkühlen gab man 50 ml Wasser zu und filtrierte ab. Der Niederschlag wurde mit Wasser gewaschen und getrocknet. Man erhielt 6,0 g N-[4-Chlor-2-fluor-5-(5.6-dihydro-2H-thiopyranyl-3-methyloxy)-phenyl]-3.4.5.6-tetrahydrophthalimid (Fp. 134 - 137°C) (Tabelle 1 Nr. 10).c) 5.5 g of the above aniline and 3.0 g of cyclohexene-1,2-dicarboxylic acid anhydride were heated under reflux in 100 ml of glacial acetic acid for 5 hours. After cooling, 50 ml of water were added and the mixture was filtered off. The precipitate was washed with water and dried. 6.0 g of N- [4-chloro-2-fluoro-5- (5.6-dihydro-2H-thiopyranyl-3-methyloxy) phenyl] -3.4.5.6-tetrahydrophthalimide (mp. 134-137 ° C.) (Table 1 No. 10).

Weitere Beispiele für Wirkstoffe, die nach diesen Syntheseprinzipien hergestellt werden können, finden sich in Tabelle 1.

Figure imgb0008
Figure imgb0009
Figure imgb0010
 Further examples of active substances that can be prepared according to these synthetic principles can be found in Table 1.
Figure imgb0008
Figure imgb0009
Figure imgb0010

Die Applikation der herbiziden Mittel bzw. der zugrundeliegenden Wirkstoffe (I) kann im Vorauflauf- oder im Nachauflaufverfahren erfolgen. Sind die Wirkstoffe für gewisse Kulturpflanzen weniger verträglich, so können Ausbringungstechniken angewandt werden, bei welchen die herbiziden Mittel mit Hilfe der Spritzgeräte so gespritzt werden, daß die Blätter der empfindlichen Kulturpflanzen nach Möglichkeit nicht getroffen werden, während die Wirkstoffe auf die Blätter darunter wachsender unerwünschter Pflanzen oder die unbedeckte Bodenfläche gelangen (post-directed, lay-by).The herbicidal compositions or the underlying active ingredients (I) can be applied pre- or post-emergence. If the active ingredients are less compatible with certain crop plants, application techniques can be used in which the herbicidal compositions are sprayed with the aid of sprayers in such a way that the leaves of the sensitive crop plants are not struck wherever possible, while the active ingredients are applied to the leaves of undesirable plants growing below them or the uncovered floor area (post-directed, lay-by).

Die Aufwandmengen an Wirkstoff betragen je nach Bekämpfungsziel, Jahreszeit, Zielpflanzen und Wachstumsstadien 0,005 bis 3,0 vorzugsweise 0,01 bis 0,5 kg/ha.The application rates of active ingredient are 0.005 to 3.0, preferably 0.01 to 0.5 kg / ha, depending on the control target, season, target plants and growth stages.

Die Wirkung der Wirkstoffe der Formel I auf das Pflanzenwachstum läßt sich durch Gewächshausversuche zeigen:
Als Kulturgefäße dienen Plastikblumentöpfe mit 300 cm³ Inhalt und lehmigem Sand mit etwa 3,0 % Humus als Substrat. Die Samen der Testpflanzen werden nach Arten getrennt eingesät.The effect of the active compounds of the formula I on plant growth can be shown by greenhouse experiments:
Plastic flower pots with a content of 300 cm³ and loamy sand with about 3.0% humus serve as culture vessels. The seeds of the test plants are sown separately according to species.

Zum Zwecke der Nachauflaufbehandlung werden entweder direkt gesäte oder in den gleichen Gefäßen aufgewachsene Pflanzen ausgewählt oder sie werden erst als Keimpflanzen getrennt angezogen und einige Tage vor der Behandlung in die Versuchsgefäße verpflanzt.For post-emergence treatment, plants are either sown directly or grown in the same containers, or they are first grown separately as seedlings and transplanted into the test containers a few days before the treatment.

Je nach Wuchsform werden die Testpflanzen bei einer Wuchshöhe von 3 bis 15 cm dann mit den in Wasser als Verteilungsmittel suspendierten oder emulgierten Wirkstoffen, die durch fein verteilende Düsen gespritzt werden, behandelt. Die Aufwandmengen für die Nachauflaufbehandlung variieren; sie betragen 0,015 bis 0,125 kg/ha a.S.Depending on the growth habit, the test plants are then treated at a height of 3 to 15 cm with the active ingredients suspended or emulsified in water as a distribution medium and sprayed through finely distributing nozzles. The application rates for post-emergence treatment vary; they amount to 0.015 to 0.125 kg / ha a.S.

Die Versuchsgefäße werden im Gewächshaus aufgestellt, wobei für wärmeliebende Arten wärmere Bereiche (20 bis 35°C) und für solche gemäßigter Klimate 10 bis 20°C bevorzugt werden. Die Versuchsperiode erstreckt sich über 2 bis 4 Wochen. Während dieser Zeit werden die Pflanzen gepflegt und ihre Reaktion auf die einzelnen Behandlungen wird ausgewertet.The test vessels are set up in the greenhouse, warmer areas (20 to 35 ° C.) being preferred for heat-loving species and 10 to 20 ° C. being preferred for those with moderate climates. The trial period spans 2 to 4 weeks. During this time, the plants are cared for and their reaction to the individual treatments is evaluated.

Bewertet wird nach einer Skala von 0 bis 100. Dabei bedeutet 100 kein Aufgang der Pflanzen bzw. völlige Zerstörung zumindest der oberirdischen Teile und 0 keine Schädigung oder normaler Wachstumsverlauf.Evaluation is based on a scale from 0 to 100. 100 means no emergence of the plants or complete destruction of at least the aerial parts and 0 means no damage or normal growth.

Die in den Gewächshausversuchen verwendeten Pflanzen gehören den nachstehenden Arten an: Abkürzung Lateinischer Name Deutscher Name Englischer Name ABUTH Abutilon theophrasti Chinesischer Hanf velvet leaf AMARE Amaranthus spp. Fuchsschwanzarten pigweed CHEAL Chenopodium album Weißer Gänsefuß lambsquarters CHYCO Chrysanthemum coronar. Wucherblumenarten marigold GALAP Galium aparine Klettenlabkraut catchweed bedstraw IPOSS Ipomoea spp. Prunkwindearten morningglory LAMAM Lamium amplexicaule Stengelumfassende Taubnessel henbit MERAN Mercurialis annua Einjähriges Bingelkraut annual mercury POLPE Polygonum persicaria Flohknöterich ladystumb SOLNI Solanum nigrum Schwarzer Nachtschatten black nightshade STEME Stellaria media Vogelsternmiere chickweed TRZAS Triticum aestivum Sommerweizen wheat TRZAW Triticum aestivum Winterweizen wheat VERSS Veronica spp. Ehrenpreisarten speedwell VIOAR Viola arvensis Stiefmütterchen violet The plants used in the greenhouse experiments belong to the following types: abbreviation Latin name German name English name ABUTH Abutilon theophrasti Chinese hemp velvet leaf AMARE Amaranthus spp. Foxtail species pigweed CHEAL Chenopodium album White goose foot lambsquarters CHYCO Chrysanthemum coronar. Weepers marigold GALAP Galium aparine Burdock herb catchweed bedstraw IPOSS Ipomoea spp. Magnificent wind species morningglory LAMAM Lamium amplexicaule Dead nettle encompassing stems henbit MERANO Mercurialis annua Annual squid annual mercury POLPE Polygonum persicaria Flea knotweed ladystumb SOLNI Solanum nigrum Black nightshade black nightshade STEME Stellaria media Vogelsternmiere chickweed TRZAS Triticum aestivum Summer wheat wheat TRZAW Triticum aestivum Winter wheat wheat VERSS Veronica spp. Honor award types speedwell VIOAR Viola arvensis Pansies violet

Die Verbindungen 29, 9, 3 und 10 zeigen schon bei geringer Aufwandmenge im Nachauflaufverfahren gute herbizide Wirkung gegen breitblättrige unerwünschte Pflanzen (Tabelle 2).The compounds 29, 9, 3 and 10 show good herbicidal activity against broad-leaved undesirable plants (Table 2) even when the application rate is low.

Unerwünschte breitblättrige Pflanzen werden von den neuen Wirkstoffen 21, 22 und 4 mit 0,03 bzw. 0,06 kg a.S./ha im Nachauflaufverfahren sicher erfaßt.Unwanted broad-leaved plants are reliably detected by the new active ingredients 21, 22 and 4 with 0.03 and 0.06 kg a.S./ha in the post-emergence process.

Weizen erleidet dabei allenfalls geringe und kurzzeitige, sich auswachsende Schäden; diese Herbizide wirken selektiv (Tabellen 3, 4).Wheat suffers little and short-term, growing damage at best; these herbicides act selectively (Tables 3, 4).

In Anbetracht der Vielseitigkeit der Applikationsmethoden können die erfindungsgemäßen Verbindungen bzw. sie enthaltende Mittel noch in einer weiteren Zahl von Kulturpflanzen zur Beseitigung unerwünschter Pflanzen eingesetzt werden. In Betracht kommen beispielsweise folgende Kulturen:

Figure imgb0011
Figure imgb0012
 In view of the versatility of the application methods, the compounds according to the invention or compositions containing them can also be used in a further number of crop plants for eliminating undesired plants. The following crops are considered, for example:
Figure imgb0011
Figure imgb0012

Zur Verbreiterung des Wirkungsspektrums und zur Erzielung synergistischer Effekte können die Wirkstoffe der Formel I sowohl unter sich als auch mit zahlreichen Vertretern anderer herbizider oder wachstumsregulierender Wirkstoffgruppen gemischt und gemeinsam ausgebracht werden. Beispielsweise kommen als Mischungspartner Diazine, 4H-3,1-Benzoazinderivate, Benzothiadiazinone, 2,6-Dinitroaniline, N-Phenylcarbamate, Thiolcarbamate, Halogencarbonsäuren, Triazine, Amide, Harnstoffe, Diphenylether, Triazinone, Uracile, Benzofuranderivate, Chinolincarbonsäuren, Cyclohexenone, (Hetero)-aryloxy-phenoxy-propionsäure und deren Salze, Ester und Amide und andere in Betracht.In order to broaden the spectrum of activity and to achieve synergistic effects, the active compounds of the formula I can be mixed both among themselves and with numerous representatives of other herbicidal or growth-regulating active compound groups and applied together. For example, diazines, 4H-3,1-benzoazine derivatives, benzothiadiazinones, 2,6-dinitroanilines, N-phenyl carbamates, thiol carbamates, halocarboxylic acids, triazines, amides, ureas, diphenyl ethers, triazinones, uracils, benzofuran derivatives, quinoline hexenocarbonic acids, (cyclohexenecarboxylic acids, cyclohexenecarboxylic acids, (cyclohexenecarboxylic acids, cyclohexenecarbonic acids, cyclohexenecarboxylic acids, ) -aryloxy-phenoxy-propionic acid and its salts, esters and amides and others into consideration.

Außerdem kann es von Nutzen sein, die Wirkstoffe der Formel I allein oder in Kombination mit anderen Herbiziden auch noch mit weiteren Pflanzenschutzmitteln gemischt gemeinsam auszubringen, beispielsweise mit Mitteln zur Bekämpfung von Schädlingen oder phytopathogenen Pilzen bzw. Bakterien. Von Interesse ist ferner die Mischbarkeit mit Mineralsalzlösungen, welche zur Behebung von Ernährungs- und Spurenelementmängeln eingesetzt werden. Es können auch nichtphytotoxische Öle und Ölkonzentrate zugesetzt werden.

Figure imgb0013
Figure imgb0014
Figure imgb0015
 It may also be useful to apply the active compounds of the formula I, alone or in combination with other herbicides, together with other crop protection agents, for example with agents for controlling pests or phytopathogenic fungi or bacteria. Also of interest is the miscibility with mineral salt solutions, which are used to remedy nutritional and trace element deficiencies. Non-phytotoxic oils and oil concentrates can also be added.
Figure imgb0013
Figure imgb0014
Figure imgb0015

Claims (5)

  1. An N-phenyltetrahydrophthalimide compound of the formula I
    Figure imgb0030
     where R¹ is hydrogen, fluorine or chlorine, R² is chlorine or bromine, R³ is hydrogen or C₁-C₃-alkyl and R⁴ is a 5-membered or 6-membered saturated or unsaturated heterocyclic structure, containing an oxygen or sulfur atom, which may be substituted by up to three C₁-C₃-alkyl groups.
  2. A process for the preparation of a compound of the formula I as claimed in claim 1, wherein a substituted phenol of the formula II
    Figure imgb0031
     is reacted with a compound of the formula III
    Figure imgb0032
     where X is halogen or sulfonyloxy, in the presence of a base.
  3. A process for the preparation of a compound of the formula I as claimed in claim 1, wherein a nitrophenol of the formula IV
    Figure imgb0033
     is reacted with a compound of the formula III as claimed in claim 2
    Figure imgb0034
     to give a nitrophenyl ether of the formula V
    Figure imgb0035
     the latter is then hydrogenated and the resulting aniline VI
    Figure imgb0036
     is reacted with tetrahydrophthalic anhydride to give I.
  4. Use of a compound of the formula I as claimed in claim 1 as a herbicide.
  5. A herbicide containing a compound of the formula I as claimed in claim 1 and conventional additives, extenders and diluents.
EP88117315A 1987-10-27 1988-10-18 N-phenyltetrahydrophthalimide derivatives Expired - Lifetime EP0313963B1 (en)

Priority Applications (1)

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AT88117315T ATE83775T1 (en) 1987-10-27 1988-10-18 N-PHENYLTETRAHYDROPHTHALIMIDE COMPOUNDS.

Applications Claiming Priority (2)

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DE3736297 1987-10-27
DE19873736297 DE3736297A1 (en) 1987-10-27 1987-10-27 N-PHENYLTETRAHYDROPHTHALIMIDVERBINDUNGEN

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EP0313963B1 true EP0313963B1 (en) 1992-12-23

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US4917721A (en) * 1986-02-11 1990-04-17 Ciba-Geigy Corporation Herbicidal esters, compositions and use
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US4292070A (en) * 1979-04-13 1981-09-29 Mitsubishi Chemical Industries, Ltd. N-Substituted tetrahydrophthalimide and herbicidal composition
JPS5982360A (en) * 1982-11-01 1984-05-12 Sumitomo Chem Co Ltd N-phenyltetrahydrophthalimide derivative, its production method and herbicide containing it as an active ingredient
EP0157876A1 (en) * 1983-10-13 1985-10-16 FMC Corporation HERBICIDAL 1-ARYL-$g(D)?2 -1,2,4-TRIAZOLIN-5-ONES
US4917721A (en) * 1986-02-11 1990-04-17 Ciba-Geigy Corporation Herbicidal esters, compositions and use
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KR890006630A (en) 1989-06-14
ATE83775T1 (en) 1993-01-15
US4888046A (en) 1989-12-19
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CA1332945C (en) 1994-11-08

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